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1301.

Question 34Give the pair of contrasting traits of the following characters in pea plant and mention which is dominant and recessive.(i) yellow seed (ii) round seed (iii) green seed (iv) wrinkled seed.

Answer»

Question 34

Give the pair of contrasting traits of the following characters in pea plant and mention which is dominant and recessive.

(i) yellow seed (ii) round seed (iii) green seed (iv) wrinkled seed.



1302.

Consider the following statements about The Indian National Trust for Art and Cultural Heritage (INTACH): Which of the above statement(s) is/are correct?

Answer»

Consider the following statements about The Indian National Trust for Art and Cultural Heritage (INTACH):

Which of the above statement(s) is/are correct?


1303.

Classify according to food-type.tiger, cow, vulture, bacteria, deer, goat, human, fungus, lion, sparrow, buffalo, frog, cockroach, tick.

Answer» Classify according to food-type.

tiger, cow, vulture, bacteria, deer, goat, human, fungus, lion, sparrow, buffalo, frog, cockroach, tick.
1304.

यदि शारीरिक रूप से चुनौती का सामना कर रहे व्यक्ति और दर्शक, दोनों एक साथ रोने लगेंगे, तो उससे प्रश्नकर्ता का कौन-सा उद्देश्य पूरा होगा?

Answer»
यदि शारीरिक रूप से चुनौती का सामना कर रहे व्यक्ति और दर्शक, दोनों एक साथ रोने लगेंगे, तो उससे प्रश्नकर्ता का कौन-सा उद्देश्य पूरा होगा?
1305.

Question 1Why do we classify organisms?

Answer»

Question 1

Why do we classify organisms?



1306.

Question 2How do annelids differ from arthropods?

Answer»

Question 2

How do annelids differ from arthropods?



1307.

The technique of establishing evolutionary relationships based on changes accumulated in the DNA is known as _______ .

Answer» The technique of establishing evolutionary relationships based on changes accumulated in the DNA is known as _______ .
1308.

Which of the following effects of auxins on plants is the basis for commercial application?

Answer»

Which of the following effects of auxins on plants is the basis for commercial application?


1309.

58. The enthalpy of neutralisation of a weak acid in 1 M solution with a strong base is -56.1 kJ mol-1. If the enthalpy of ionization of the acid is 1.5 kJ mol-1 and enthalpy of neutralization of the strong acid with astrong base is-57.3 kl equiv-, what is the % ionizationof the weak acid in molar solution (assume the acid tobe monobasic)?

Answer» 58. The enthalpy of neutralisation of a weak acid in 1 M solution with a strong base is -56.1 kJ mol-1. If the enthalpy of ionization of the acid is 1.5 kJ mol-1 and enthalpy of neutralization of the strong acid with astrong base is-57.3 kl equiv-, what is the % ionizationof the weak acid in molar solution (assume the acid tobe monobasic)?
1310.

Lewis structure of NH4+

Answer» Lewis structure of NH4+
1311.

Factors vital for successful conception is/are

Answer»

Factors vital for successful conception is/are


1312.

Computers need electricity to share data. Do our nerves also need electricity or something like that to send instructions to brain?

Answer»

Computers need electricity to share data. Do our nerves also need electricity or something like that to send instructions to brain?

1313.

earthworms comes under Platehelminthes or Nematoda?

Answer» earthworms comes under Platehelminthes or Nematoda?
1314.

Name the hormones which help in maintaining blood sugar levels?

Answer»

Name the hormones which help in maintaining blood sugar levels?

1315.

Why the pancreas is a dual gland.

Answer» Why the pancreas is a dual gland.
1316.

What is the difference between symptoms and syndrome?

Answer» What is the difference between symptoms and syndrome?
1317.

Full form of PKU

Answer»

Full form of PKU


1318.

Following image illustrates a yellow thread like plant. What is the mode of nutrition and what is its name?

Answer»

Following image illustrates a yellow thread like plant. What is the mode of nutrition and what is its name?




1319.

Explain the ring structure which is involving in the cyclic structure of glucose.how to draw the structure?

Answer» Explain the ring structure which is involving in the cyclic structure of glucose.how to draw the structure?
1320.

how does vapour pressure depend on temperature ?

Answer» how does vapour pressure depend on temperature ?
1321.

List out the factors that are responsible for population explosion in India.

Answer»

List out the factors that are responsible for population explosion in India.


1322.

What is the importance of DNA replication?

Answer» What is the importance of DNA replication?
1323.

Palaemon (prawn) has an open circulatory system and have jointed legs. To which group does it belong?

Answer»

Palaemon (prawn) has an open circulatory system and have jointed legs. To which group does it belong?



1324.

Question 38 Why cannot fertilization take place in flowers if pollination does not occur?

Answer» Question 38
Why cannot fertilization take place in flowers if pollination does not occur?
1325.

ntYellow bodied;white eyed females were crossed with brown-bodied, red eyed male in a dihybrid cross conducted by Morgan. What percentage of F2 progeny was recombinant type?n nt1. 1.3%n nt2. 37.2%n

Answer» ntYellow bodied;white eyed females were crossed with brown-bodied, red eyed male in a dihybrid cross conducted by Morgan. What percentage of F2 progeny was recombinant type?n nt1. 1.3%n nt2. 37.2%n
1326.

The involuntary actions in the body are controlled by: (a) medulla in forebrain (b) medulla in hindbrain (c) medulla in the spinal cord (d) medulla in midbrain

Answer»

The involuntary actions in the body are controlled by:

(a) medulla in forebrain

(b) medulla in hindbrain

(c) medulla in the spinal cord

(d) medulla in midbrain

1327.

What are vertebrates? Write 4 characteristic features of vertebrates.

Answer» What are vertebrates? Write 4 characteristic features of vertebrates.
1328.

Beeswax is a natural wax

Answer» Beeswax is a natural wax
1329.

How many pairs of chromosomes does a human nerve cell posses? ___

Answer»

How many pairs of chromosomes does a human nerve cell posses? ___

1330.

when a cross is made between a tall plant with yellow seeds (TtYy) and a tall plant with green seeds (Ttyy), what is the proportions of phenotypes of the offsprings in F_1 generation? (1)proportion of tall and green (2) proportion of dwarf and green

Answer» when a cross is made between a tall plant with yellow seeds (TtYy) and a tall plant with green seeds (Ttyy), what is the proportions of phenotypes of the offsprings in F_1 generation? (1)proportion of tall and green (2) proportion of dwarf and green
1331.

The movement of plants in response to the stimulus of touch is called _____________.

Answer»

The movement of plants in response to the stimulus of touch is called _____________.


1332.

Movement due to growth in pea plants?

Answer» Movement due to growth in pea plants?
1333.

In the test tubes A and B shown below, yeast was kept in sugar solution. Which products of respiration would you expect in tubes A and B?​Give reason for your answer.

Answer» In the test tubes A and B shown below, yeast was kept in sugar solution. Which products of respiration would you expect in tubes A and B?





​Give reason for your answer.
1334.

Which of the following hormone(s) is/are not produced by non organised endocrine tissues?

Answer»

Which of the following hormone(s) is/are not produced by non organised endocrine tissues?


1335.

The pathogen which is responsible for causing typhoid is ____________.

Answer» The pathogen which is responsible for causing typhoid is ____________.
1336.

The organ A which is located inside the skull of our body is protected by a bony box B and it is surrounded by three membranes C. The space between the membranes is filled with a liquid D which protects the organ A from mechanical shocks. The organ A in combination with another organ E makes up the central nervous system.(a) What is organ A?(b) What are (i) B, (ii) C and (iii) D?(c) Name the organ E.(d) While walking barefoot, if we happen to step on a sharp piece of stone, we immediately lift our foot up. Which of the two organs: A or E, is directly involved in this action?(e) If we step out from a darkened room into bright sunshine, we close our eyes for a moment. Which of the two organs, A or E, is directly involved in this action?

Answer» The organ A which is located inside the skull of our body is protected by a bony box B and it is surrounded by three membranes C. The space between the membranes is filled with a liquid D which protects the organ A from mechanical shocks. The organ A in combination with another organ E makes up the central nervous system.

(a) What is organ A?

(b) What are (i) B, (ii) C and (iii) D?

(c) Name the organ E.

(d) While walking barefoot, if we happen to step on a sharp piece of stone, we immediately lift our foot up. Which of the two organs: A or E, is directly involved in this action?

(e) If we step out from a darkened room into bright sunshine, we close our eyes for a moment. Which of the two organs, A or E, is directly involved in this action?
1337.

Where can genetic root of 'Homosapiens be traced'?

Answer» Where can genetic root of 'Homosapiens be traced'?
1338.

1What are bio diversity hotspots ? 2why do we need to conserve them? Give 5 Good reasons 3What is monoculture? 4list the ways how these stakeholders can help in conservation of forests in their own ways? 5 how tourists cause dadamage to forest?

Answer» 1What are bio diversity hotspots ?
2why do we need to conserve them? Give 5 Good reasons
3What is monoculture?
4list the ways how these stakeholders can help in conservation of forests in their own ways?
5 how tourists cause dadamage to forest?
1339.

How do the organisms living in habitats which can drastically change in time, cope or manage with stressful conditions?

Answer» How do the organisms living in habitats which can drastically change in time, cope or manage with stressful conditions?
1340.

The diagram given below is that of a developing human foetus in the womb. Study the same and answer the questions that follow : (a) Name the parts '1' to '5' indicated by guidelines. (b) What term is given to the period of development of the foetus in the womb? (c) How many days does the foetus take to be fully developed? (d) Mention two functions of the parts labelled '2' other than its endocrine function. (e) Name any one hormone produced by the part labelled '2'.

Answer»

The diagram given below is that of a developing human foetus in the womb. Study the same and answer the questions that follow :

(a) Name the parts '1' to '5' indicated by guidelines.

(b) What term is given to the period of development of the foetus in the womb?

(c) How many days does the foetus take to be fully developed?

(d) Mention two functions of the parts labelled '2' other than its endocrine function.

(e) Name any one hormone produced by the part labelled '2'.

1341.

Match List I with List II. List I List IIa. Source of microwave frequencyb. Source of infrared frequencyc. Source of Gamma Raysd. Source of X-raysi. Radioactive decay of nucleus ii. Magnetroniii. Inner shell electronsiv. Vibration of atoms and moleculesv. LASERvi. RC circuitChoose the correct answer from the option given below:

Answer»

Match List I with List II.













List I List II
a. Source of microwave frequency



b. Source of infrared frequency



c. Source of Gamma Rays



d. Source of X-rays
i. Radioactive decay of nucleus



ii. Magnetron



iii. Inner shell electrons



iv. Vibration of atoms and molecules



v. LASER



vi. RC circuit



Choose the correct answer from the option given below:
1342.

Spinal nerve is a type of __.

Answer»

Spinal nerve is a type of __.



1343.

If pulmonary arteries have deoxygenated blood then why they are called arteries?

Answer»

If pulmonary arteries have deoxygenated blood then why they are called arteries?

1344.

The symptom of goitre is

Answer»

The symptom of goitre is


1345.

On the roads, why is a colour blind person a dangerous driver?

Answer»

On the roads, why is a colour blind person a dangerous driver?



1346.

how both urine and semen pass through penis??why both don't come out together?or why semen doesnot come out without sexual arousal?when and at what time,age semen is ejaculated from penis?

Answer» how both urine and semen pass through penis??why both don't come out together?or why semen doesnot come out without sexual arousal?when and at what time,age semen is ejaculated from penis?
1347.

A set of observable characteristics of an individual organism is called _____.

Answer»

A set of observable characteristics of an individual organism is called _____.


1348.

Why a mango seed forms only a mango plant and not any other plant?

Answer» Why a mango seed forms only a mango plant and not any other plant?
1349.

Actually, no two individual have the same DNA sequence then, how DNA fingerprinting is used for settling maternity or paternity disputes? Explain detailed.

Answer» Actually, no two individual have the same DNA sequence then, how DNA fingerprinting is used for settling maternity or paternity disputes? Explain detailed.
1350.

Explain the process of digestion with respect to the following points :- Assimilation Excretion Absorption e.t.c.

Answer»

Explain the process of digestion with respect to the following points :-

Assimilation Excretion Absorption e.t.c.